http://www.amiga-immortal.com/
Lists 3 retailers (Hülsbeck and 2 others) and also has an email adress that seems to be working. Maybe Jan can help if you write him?
(It also lists the musicians, although I doubt they could help in this case(?))

As some of the CDs (maybe) are sold out, I wonder if one of the retailers/producers would sell the album in mp3 format.

Edit: Jan Zottmann turns out to be the head of production since Volume 2.

I have the CD, and haven't been listening to it for ages, so I think it deserves a new home :-) Must have bought it at c64audio.com many years ago.
Does a price for $20 plus shipping sound reasonable? Please PM me for further details.